There are questions about the source of the strain of cholera affecting Haiti, linking it to Nepalese UN Peacekeepers. We talk to researchers examining cholera found in the area who believe its origin might be from a different place altogether.

We talk to the 98-year-old doctor called the grandfather of allergy medicine, who worked with Alexander Flemming.

Also, the emotional fallout for the adopted teenagers who trace their birth relatives online in less than 10 minutes.

Note: Eileen Fursland's booklet for adopted teenagers will be available from BAAF in January (see link below).

Available now

28 minutes

Last on

Christmas Day 2010 05:32 GMT

Zika: a new pandemic?

Zika virus emerggency talks

The explosive spread and impact of the mosquito-borne virus.